C# Signature:
[DllImport("kernel32.dll", SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool GetProcessTimes(IntPtr hProcess, out FILETIME
lpCreationTime, out FILETIME lpExitTime, out FILETIME lpKernelTime,
out FILETIME lpUserTime);
User-Defined Types:
None.
Notes:
None.
Tips & Tricks:
Please add some!
Sample Code:
// www.dotnetnews.com
[STAThread]
static void Main(string[] args)
{
Console.WriteLine("Enter PID:");
int i = Convert.ToInt32( Console.ReadLine() );
IntPtr ip = System.Diagnostics.Process.GetProcessById(i).Handle;
System.Runtime.InteropServices.FILETIME ftCreation, ftExit, ftKernel, ftUser;
Console.WriteLine(GetProcessTimes(ip, out ftCreation, out ftExit, out ftKernel, out ftUser));
Console.WriteLine("Creation {0}", FiletimeToDateTime(ftCreation));
Console.WriteLine("Exit {0}", FiletimeToDateTime(ftExit));
Console.WriteLine("Kernel {0}", FiletimeToTimeSpan(ftKernel));
Console.WriteLine("User {0}", FiletimeToTimeSpan(ftUser));
Console.ReadLine();
}
[DllImport("kernel32.dll")]
static extern bool GetProcessTimes(IntPtr hProcess,
out System.Runtime.InteropServices.FILETIME lpCreationTime,
out System.Runtime.InteropServices.FILETIME lpExitTime,
out System.Runtime.InteropServices.FILETIME lpKernelTime,
out System.Runtime.InteropServices.FILETIME lpUserTime);
public static DateTime FiletimeToDateTime(System.Runtime.InteropServices.FILETIME fileTime)
{
//NB! uint conversion must be done on both fields before ulong conversion
ulong hFT2 = unchecked((((ulong)(uint)fileTime.dwHighDateTime) << 32) | (uint)fileTime.dwLowDateTime);
return DateTime.FromFileTimeUtc((long)hFT2);
}
public static TimeSpan FiletimeToTimeSpan(System.Runtime.InteropServices.FILETIME fileTime)
{
//NB! uint conversion must be done on both fields before ulong conversion
ulong hFT2 = unchecked((((ulong)(uint)fileTime.dwHighDateTime) << 32) | (uint)fileTime.dwLowDateTime);
return TimeSpan.FromTicks((long)hFT2);
}
Alternative Managed API:
Do you know one? Please contribute it!
